Combination gas and oil burner



May 31, 1932. A. w. MORSE COMBINATION GAS AND OIL BURNER Filed March 18, 1,930

,ll/ben W Morse A TTORNEY.

Patented May 31, 1932 #STATES ALBERT w. MORSE, OF Aremesa?` HILLS, NEW YORK COMBINATION GAS AND VOlL BURNER Application inea March 1s, 193e. serial No. 436,707.

This invention relates to improvements in fuel burners and more especially to burners which, while primarily intended for use with gas, have attached to them certain instrumentalities to enable them to burn oil atomized by air or steam equally as well.

It is the particular object of the invention to provide a burner of this kind which can be operated with gas at low pressure in combiy" nation with atmospheric air and without air under pressure. Another Objectis to equip a burner of this type with means to enable thefsame to bel changed over from gas fuel to oil fuel, whenever the gas supply should 'T5 fail.` Still another object is -to so' locate adjustably within a gas burner, an oil burnin unit, so that operation with oil can be obtaine without the necessity of relocating the burner or varying its relation to the furnace -to "2D which itis applied. Further objects will become apparent in the following specification in which a preferred embodiment of the burner is described.

The invention Vis illustrated by the aid of fi 2.5 the accompanying drawings in which Fig. 1 is a vertical longitudinal sectional View ofthe burner; Y

Fig. 2 is atransverse cross sectional view taken along the plane of line 2 2 inlig. 1;

Fig. 3 is an end view of the burner; and

Fig. 4 is a fragmentary sectional view showing a modified form of adjustably attaching a deflector to the inside of the burner. Like characters of reference denote similar parts throughout the several views and the following specification.

10 is a. cylindrical casing of substantially L shape, its'shorter branch 11 is threaded interiorly to receive a gas supply pipe 12. The terminal of the longer branch 13 of casing 10 is threaded eXteriorly at 14. A tubular chamber '15, formed by a wall 16 extends through the casing 10 in axial alignment with its longer branch 13. 'Wall 16a connects the l chamber 15 with the outer wall of casing 10 opposite its shorter branch 11 and is threaded interiorly for connection with an air or steam supply pipe 17. j n

CasinglO is bored out adjacent to branch 11 to receive what is commonly termed an oil spindle 18. This oil spindleis of hollow construction, being provided with a centralduct` 19, and extends through the tubular chamber 15 in central alignment'l there- With. 2O is an enlarged upper end of spindle 18 threaded interiorly to receive an atomizer plug 21 of the usual design, now known in the art as Anthony Nebulyte plug. The outlet face of plug 21 is slightly conically shaped at 22, its sides having polygonal wrench surfaces 23. l

24 is a deiector capscrewed onto the eX-A terior of the cylindrical chamber 15 formed by wall 16, making a tight joint therewith at 25," and is provided with a circular central opening 26 which is smaller than the outside diameter of plug 21'. Cap 24 is also provided with a tubular extension 27 slidingly engaging the edges of polygonal sides 23 of plug 21 providing passages along'the polygonal sides, the bottom of the extension 27 being in spaced relation to and preferably parallel with the conical shapedA top 22 of plug 21. 28 is an oil deflecting surface ex` tending from outlet 26 to the top ofthe cap 24. i

' 30 is a gas cap adapted to be screwed onto the threaded end 14 of branch 13 of casing 10. This cap is closed by conically disposed walls 31 substantially parallel to the outer f lugs on the outsideof cap 30 to facilitate screwing the same onto the threadedl part 14.

34 is alock nut also screwed onto threaded part 14 and adapted to bear tightly against the end face of cap 30 locking the same onto the thread gas tightly in anydesired spaced i' relation between walls 31 and detlector cap 24. l. l y ,l

35 fis a reduced portion of oil spindle 18, projecting outside of the casing 10 and isA threaded exteriorly to receive a needle valve Il down to 1/2 l 36 of standard construction, controlling the flow of oil to the burner from a pipe 37.

In the modilied construction shown in Fig.

4, the deflector cap 24 instead of being screwed cap 24 at the same time locking the same in` such relation to the plug 21l as is found to bemost desirable. v J

41 is a fragmentary section of a shell of a furnace, having a refractory lining L12, and acombustion block i3 set intoy an opening of the furnace Ain axialv alignment Vwith the longitudinal axis of the burner and in certain; spaced relation` tol the end of the burner. The operation ofthe device isy as follows llVhen, the burnerI isnormally used as a gas burner, the gas supply valve (not shown) is opened.. Gasthen passes through the pipe 12 into.. the casi-ng 10, around1 walls` 16`of chamber 1,5, around the dellector cap 211 and out of the burner through perforations 32 in the gas cap30. Gras at any available pressure of water hasbeenA found. suiiicient. y,

Should-'it be desired. to change tliefuel from gastooil on` account of failure of gas supply or too great a drop iny pressure-,the

gas supply valve-is closed,y and the gas cap 30 removed.y Oil is then: admitted through supply pipe- 37 and needle valve 36, whence it passesthrough. plug 2lout; at the front end offthe cap 24, where it mixes with;V air or steam forced. into. the casing 10 through pipe 17.` This air orl steam is. deflected by/ mea-ns of cap 24tandA morev particularly by the passage between the outer face 22 of the plug 21 andv the bottom of extension 27 of the cap toward the atomizedi spray of oil issuing fronrthe-plugv 21, and out ofV the burner through opening 2.6., Attention is particularly .called to the fact that the burner is so loca-ted in front of the furnace that ignition of the gas occurs in the center of the combustion block lin, accordance with4 well established practice. But 'combustion characteristics of gas androilvary considerably,

and thespray of oil must be adjusted so that ignition also occurs in the center of the com-- bustion block. This can be achieved by sim plyvarying the position ofthe dellector cap with respect to vtheatomizer plug, as shown in Fig. 1 which changes the oil flame to a wide or'narrow one, long or short one, and permitsA the oil burning unit` to be 'so adjustedI that ignition. occursat the desired point.

While I have shown and above described one certain form 0f oil burner, operable by plo-yed so long as the characteristicsof the gas burner are not changed and the oil burning unit is located within. the gas burner and means are provided to adjust the point of ignition of the oil burning unit.

As an atomizing medium for oil when used instead of gas, either steam or air under pressure may be employed, and reference to one ofthese media in the appended claims is to include as an alternative the other.

Various changes in the form, proportion and minor details of construction may be resorted to Without departing from the princif ple or sacrificing any of the advantages of the invention, as defined in the appended claims.. 4

What l2 cla-im` asnew, s :1 1. In ak burner of the kind described, a liquid fuel supply pipe extending; through the burneit-a-n `atomizer plug at the outletend of the said pipe, ana-ir; chamber surrounding the saidV pipe, and air7 supply connection to the said cliamher,y a. detlector cap,y having a central outlet surrounding` the saidV plug and adapted` to close thel saidaijr chamber when contacting with thesaid plug, a perf-orated gas cap at the endy ofthe burner en closing the said deflector cap,and means to admit gas into the burner around: the said chamber to -be discharged through theV perforations in the said gas cap, the. said liquid fuel supply pipeand atomizer. plngbeing externally adjustable` longitudinally vwithiii theburner. Y v f y f 2.. In burneras.. defined? in` claim-1 adjustable' deflector cap.

3. In a burneras defined-in claim. 1*, an adjustable gas cap.

l. Inv a burner as defi-ned in claim 1,; the combinationfof an adjustable deflector cap and an adjustable; gas cap.. y

5. In a burner as defined in lclaiml, the gas cap having a number of-perforationszhaving their axes converged to a. common center, adapted to discharge divergingjet's of gas.

6. In a burner as defined in; claim 1,'means to vary the relationy between atomizer plug and deflector'cap for the purpose of causing ignition of oil to cccurin the combustion block of a furnace at substantially the same point as with gas. Y Y A 7. In a burner asdefined. in claimrl, means to vary the relation with the combustiony block in a furnace,of the gas. cap,ithed'e.` flectorcap, and the ato'mizerplug.` v K i 8. In a burner as defined in claim 1, the

gas cap, the dei-lector cap and the atomizer plug being adjustable, independ'entlyv oii'eachother, with respect to the combustionfblock of a furnace. 1 p

In testimony whereof I have hereuntov set my hand. l l

v ALBERT W. MRSE. 

